The Catalytic Properties of PtSn/Al2O3 for Acetic Acid Hydrogenation

Authors: Mingchuan Zhou, Haitao Zhang, Hongfang Ma, Weiyong Ying

Abstract:

Alumina supported platinum and tin catalysts with different loadings of Pt and Sn were prepared and characterized by low temperature N₂ adsorption/desorption, H₂-temperature programed reduction and CO pulse chemisorption. Pt and Sn below 1% loading were suitable for acetic acid hydrogenation. The best performance over 0.75Pt1Sn/Al₂O₃ can reach 87.55% conversion of acetic acid and 47.39% selectivity of ethanol. The operating conditions of acetic acid hydrogenation over 1Pt1Sn/Al₂O₃ were investigated. High reaction temperature can enhance the conversion of acetic acid, but it decreased total selectivity of ethanol and acetyl acetate. High pressure and low weight hourly space velocity were beneficial to both conversion of acetic acid and selectivity to ethanol.

Keywords: Acetic acid, hydrogenation, PtSn, operating condition.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1126179

References:

[1] J. Barrault, C. Bouchoule, D. Duprez, C. Montassier, M. Guisnet, and G. Pérot, Heterogeneous catalysis and fine chemicals. 1988: Elsevier.
[2] T.A. Ford, Preparation of alcohols from carboxylic acids. 1952, Google Patents.
[3] H.G. Manyar, C. Paun, R. Pilus, D.W. Rooney, J.M. Thompson, and C. Hardacre, "Highly selective and efficient hydrogenation of carboxylic acids to alcohols using titania supported Pt catalysts". Chem. Commun. , Vol. 46 no. 34, pp. 6279-6281, 2010.
[4] Z. Wang, G. Li, X. Liu, Y. Huang, A. Wang, W. Chu, X. Wang, and N. Li, "Aqueous phase hydrogenation of acetic acid to ethanol over Ir-MoO x/SiO2 catalyst". Catal. Commun. , Vol. 43 no., pp. 38-41, 2014.
[5] L. Chen, Y. Zhu, H. Zheng, C. Zhang, B. Zhang, and Y. Li, "Aqueous-phase hydrodeoxygenation of carboxylic acids to alcohols or alkanes over supported Ru catalysts". J. Mol. Catal. A: Chem. , Vol. 351 no., pp. 217-227, 2011.
[6] Y. Chen, D.J. Miller, and J.E. Jackson, "Kinetics of aqueous-phase hydrogenation of organic acids and their mixtures over carbon supported ruthenium catalyst". Industrial & engineering chemistry research, Vol. 46 no. 10, pp. 3334-3340, 2007.
[7] V. Subramani and S.K. Gangwal, "A review of recent literature to search for an efficient catalytic process for the conversion of syngas to ethanol". Energy & Fuels, Vol. 22 no. 2, pp. 814-839, 2008.
[8] R. Pestman, R. Koster, J. Pieterse, and V. Ponec, "Reactions of carboxylic acids on oxides: 1. Selective hydrogenation of acetic acid to acetaldehyde". J. Catal. , Vol. 168 no. 2, pp. 255-264, 1997.
[9] W. Rachmady and M.A. Vannice, "Acetic acid hydrogenation over supported platinum catalysts". J. Catal. , Vol. 192 no. 2, pp. 322-334, 2000.
[10] R. Alcala, J.W. Shabaker, G.W. Huber, M.A. Sanchez-Castillo, and J.A. Dumesic, "Experimental and DFT studies of the conversion of ethanol and acetic acid on PtSn-based catalysts". The Journal of Physical Chemistry B, Vol. 109 no. 6, pp. 2074-2085, 2005.
[11] S. Zhang, X. Duan, L. Ye, H. Lin, Z. Xie, and Y. Yuan, "Production of ethanol by gas phase hydrogenation of acetic acid over carbon nanotube-supported Pt–Sn nanoparticles". Catal. Today Vol. 215 no., pp. 260-266, 2013.
[12] K. Zhang, H. Zhang, H. Ma, W. Ying, and D. Fang, "Effect of Sn addition in gas phase hydrogenation of acetic acid on alumina supported PtSn catalysts". Catal. Lett. , Vol. 144 no. 4, pp. 691-701, 2014.
[13] C. Larese, J. Campos-Martin, and J. Fierro, "Alumina-and zirconia-alumina-loaded tin-platinum. surface features and performance for butane dehydrogenation". Langmuir, Vol. 16 no. 26, pp. 10294-10300, 2000.
[14] D. Rodríguez, J. Sánchez, and G. Arteaga, "Effect of tin and potassium addition on the nature of platinum supported on silica". J. Mol. Catal. A: Chem. , Vol. 228 no. 1, pp. 309-317, 2005.
[15] B.M. Nagaraja, H. Jung, D.R. Yang, and K.-D. Jung, "Effect of potassium addition on bimetallic PtSn supported θ-Al 2 O 3 catalyst for n-butane dehydrogenation to olefins". Catal. Today Vol. 232 no., pp. 40-52, 2014.